Clock-frame.



No. 649,287. Patented May 8, I900. H. W. EYSTER.

CLOCK FRAME Application filed. Nov. 29, 1899.)

{No Model.)

[NVE/VTOK AL 6 WITNESSES UNITED STATES PATENT Demon.

HALL \V. EYSTER, OF EMMITTSBURG, MARYLAND.

CLOCK-FRAM E.

SPECIFICATION forming part of Letters Patent No. 649,287, dated May 8, 1900.

Application filed November 29, 1899. Serial No. 738.667. (No model.)

To all whm'lo it may concern.-

Beit known that I, HALL WV. EYSTER, a citizen of the United States, residing at Em mitts; burg, in the county of Frederick and State of Maryland, have invented new and useful Improvements in Clock-Frames, of which the following is a specification.

My invention relates to an improvement in clock-frames.

Ileretofore attempts have been made to construct clock-frames so that the mainspringarbors could be removed without dismantling the frame or the mechanism generally known as the works, but in all such attempts failure has resulted, from the fact that provision was only made for the lateral removal of the arbor at one end, and in consequence the arbor had to be swung or tilted to get it out, and by so swinging it the large gearwheel which it always carries interfered with the other gearing and resulted in either the absolute inability to get the arbor out or else great difficulty, if not damage to the wheel itself, as well as the others in its immediate neighborhood.

One object of my invention is to obviate these defects and produce a frame of such construction that the mainspring-arbors can be removed without their being tilted the slightest degree.

Further objects are to provide means for the removal of the spring-arbors and cornerposts together or separately, as required; and a still further object is to provide a simple strong inexpensive frame which will be effectual in the accomplishment of the purposes set forth.

With these objects in view my invention consists in certain novel features of construction and combinations of parts, which will be hereinafter described, and pointed out in the claim.

In the accompanying drawings, Figure l is a view of the frame. Fig. 2 is an edge view, and Figs. 3 and 4- are details.

A and B represent the front and back plates, respectively, of the frame. These are like the corresponding parts of other clock-frames, except that my improvements are added to them. A section of the front plate from a point just above each of the mainspring arbors is cut out, and in place spectively, as shown.) These are detachably connected together, so that one piece can be removed without in any wise disturbing the others. For instance, piece 1, which supports the arbor, may be removed without the rem oval of the other two when only a partial cleaning is necessary or when the spring does not have to be taken from the corner-post. These are connected together by screws or equivalent means at 4:, and to make the connection still stronger and perfectly rigid the pins or dowels 5 5 are employed. As explained, both lower corners are alike. On the rear plate a single removable piece 6 is employed on each side, and on each side of the pieces 1 and 6, through which the arbor passes, bearing 7 projects inwardly flush with the inner face of each plate to form a shoulder for the shouldered part of the arbor, just as it would be if the ordinary solid frame were used.

To remove the arbor alone, the two screws 8 8 on both the front and rear plate are simply unscrewed,and the arbor, with its spring gear-wheel and ratchet and paw], are taken out laterally in its perpendicular position without the necessity of tilting the arbor the slightest degree, thus avoiding any interference whatsoever with other parts of the mechanism, which is the primary object of my invention.

If the mainspring is to be removed or the works are to have a thorough cleaning, then the spring must be removed from the cornerpost, and to do this the entire removable portion is taken off.

It is evident that slight changes might be resorted to in the form and arrangement of the several parts described without departing from the spirit and scope of my invention, and hence I do not wish to limit myself to the exact construction herein set forth; but,

Having fully described my invention,what I claim as new, and desire to secure by Letters Patent, is-- The combination with front and rear plates of it clock-frame, of corner-plate 8, interme- In testimony whereof I allix my signature diate plate 2, plate 1, said plates secured toin presence of two Witnesses. gether and connected to the main frame of f 7' 1' '1 the clock, plate 1 having dowels 5, 5, which HALL enter holes in the main frame and interme- \Vitnesses: diate plate 2 to effect a rigid connection be- 1 A. Q. ANNAN,

tween said plates. Vro'ron E. Rowe. 

